/***************************************************************************
* Copyright (C) 2007 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QObject>
#include <QFile>
#include <QFileInfo>
#include "constants.h"
#include "buffer.h"
#include "output.h"
#include "recycler.h"
#include "decoder_sndfile.h"
// Decoder class
DecoderSndFile::DecoderSndFile(QObject *parent, DecoderFactory *d, QIODevice *i, Output *o)
: Decoder(parent, d, i, o)
{
m_inited = FALSE;
m_user_stop = FALSE;
m_output_buf = 0;
m_output_bytes = 0;
m_output_at = 0;
bks = 0;
m_done = FALSE;
m_finish = FALSE;
m_freq = 0;
m_bitrate = 0;
m_seekTime = -1.0;
m_totalTime = 0.0;
m_chan = 0;
m_output_size = 0;
m_buf = 0;
m_sndfile = 0;
}
DecoderSndFile::~DecoderSndFile()
{
deinit();
}
void DecoderSndFile::stop()
{
m_user_stop = TRUE;
}
void DecoderSndFile::flush(bool final)
{
ulong min = final ? 0 : bks;
while ((! m_done && ! m_finish) && m_output_bytes > min)
{
output()->recycler()->mutex()->lock ();
while ((! m_done && ! m_finish) && output()->recycler()->full())
{
mutex()->unlock();
output()->recycler()->cond()->wait(output()->recycler()->mutex());
mutex()->lock ();
m_done = m_user_stop;
}
if (m_user_stop || m_finish)
{
m_inited = FALSE;
m_done = TRUE;
}
else
{
m_output_bytes -= produceSound(m_output_buf, m_output_bytes, m_bitrate, m_chan);
m_output_size += bks;
m_output_at = m_output_bytes;
}
if (output()->recycler()->full())
{
output()->recycler()->cond()->wakeOne();
}
output()->recycler()->mutex()->unlock();
}
}
bool DecoderSndFile::initialize()
{
bks = blockSize();
m_inited = m_user_stop = m_done = m_finish = FALSE;
m_freq = m_bitrate = 0;
m_output_size = 0;
m_seekTime = -1.0;
m_totalTime = 0.0;
SF_INFO snd_info;
if (! input())
{
error("DecoderSndFile: cannot initialize. No input.");
return FALSE;
}
if (! m_output_buf)
m_output_buf = new char[globalBufferSize];
m_output_at = 0;
m_output_bytes = 0;
QString filename = qobject_cast<QFile*>(input())->fileName ();
input()->close();
memset (&snd_info, 0, sizeof(snd_info));
snd_info.format=0;
m_sndfile = sf_open(filename.toLocal8Bit(), SFM_READ, &snd_info);
if (!m_sndfile)
{
qWarning("DecoderSndFile: failed to open: %s", qPrintable(filename));
return FALSE;
}
m_freq = snd_info.samplerate;
m_chan = snd_info.channels;
m_totalTime = (double) snd_info.frames / m_freq;
m_bitrate = QFileInfo(filename).size () * 8.0 / m_totalTime / 1000.0 + 0.5;
configure(m_freq, m_chan, 16, m_bitrate);
m_buf = new short[blockSize() / sizeof(short)];
m_inited = TRUE;
qDebug("DecoderSndFile: detected format: %08X", snd_info.format);
qDebug("DecoderSndFile: initialize succes");
return TRUE;
}
double DecoderSndFile::lengthInSeconds()
{
if (! m_inited)
return 0;
return m_totalTime;
}
void DecoderSndFile::seek(double pos)
{
m_seekTime = pos;
}
void DecoderSndFile::deinit()
{
m_inited = m_user_stop = m_done = m_finish = FALSE;
m_freq = m_bitrate = m_chan = 0;
m_output_size = 0;
if (m_inited)
{
delete m_buf;
m_buf = 0;
sf_close(m_sndfile);
m_sndfile = 0;
}
}
void DecoderSndFile::run()
{
long len = 0;
int stat = 0;
mutex()->lock ();
if (! m_inited)
{
mutex()->unlock();
return;
}
stat = DecoderState::Decoding;
mutex()->unlock();
{
dispatch(DecoderState ((DecoderState::Type) stat));
}
while (! m_done && ! m_finish)
{
mutex()->lock ();
// decode
if (m_seekTime >= 0.0)
{
m_output_size = sf_seek(m_sndfile, m_freq*m_seekTime, SEEK_SET);
m_seekTime = -1.0;
}
len = sizeof(short)* sf_read_short (m_sndfile, m_buf, blockSize() / sizeof(short));
if (len > 0)
{
memmove((char *)(m_output_buf + m_output_at), (char *) m_buf, len);
m_output_at += len;
m_output_bytes += len;
if (output())
flush();
}
else if (len == 0)
{
flush(TRUE);
if (output())
{
output()->recycler()->mutex()->lock ();
// end of stream
while (! output()->recycler()->empty() && ! m_user_stop)
{
output()->recycler()->cond()->wakeOne();
mutex()->unlock();
output()->recycler()->cond()->wait(output()->recycler()->mutex());
mutex()->lock ();
}
output()->recycler()->mutex()->unlock();
}
m_done = TRUE;
if (! m_user_stop)
{
m_finish = TRUE;
}
}
else
{
// error in read
error("DecoderSndFile: Error while decoding stream, File appears to be "
"corrupted");
m_finish = TRUE;
}
mutex()->unlock();
}
mutex()->lock ();
if (m_finish)
stat = DecoderState::Finished;
else if (m_user_stop)
stat = DecoderState::Stopped;
mutex()->unlock();
dispatch(DecoderState ((DecoderState::Type) stat));
deinit();
}
